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    <meta charset="UTF-8"> 
    <title>Document</title>
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    <script>
    //   var a = 156;
    //   var b =38;
    //   console.log(a > b);
    //   console.log(a >= b);
    //   console.log(a < b);
    //   console.log(a <= b);
      
    //   var a = "156";
    //   var b =38;
    //   console.log(a > b);
    //   console.log(a >= b);
    //   console.log(a < b);
    //   console.log(a <= b);
    //   如果一边有数值，则会把另一边转换为数值再比较
    //     有nan参与则不成立

    //  var a = "j";
    //  var b = "w";
    //  console.log(a >b);
    //  console.log(a >= b);
    //  console.log(a < b);
    //  console.log(a <= b)

    //  var a = "a";
    //  var b = "W";
    //  console.log(a >b);
    //  console.log(a >= b);
    //  console.log(a < b);
    //  console.log(a <= b)
    //  小写字母大于大写字母，顺序由越后越大。


    var a = 10;
    var b = "10";
    console.log(a == b);
    console.log(a === b);
    console.log(a != b);
    console.log(a !== b);








  

    </script>
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